Threading-machine for carpet-looms.



PATENTED AUG. 1, 1905.

Atitorneys.

Inventor 5 SHEETS-SHEET 1.

H. HEYMAN. THREADING' MACHINE FOR CARPET LOOMS.

APPLIOA'I'IOF FILED MAR IL 1905 Witnesse PATENTED AUG. 1, 1905.

H. HEYMAN. THREADING MAGHINEPOR CARPET LOOMS.

APPLIOATIONIILED MAR. 17, 1905.

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In ventor Attorneys.

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5 SHEETS-SHEET 3.

PATENTED AUG. 1, 1905.

N m w Q 2 b H. HE YMAN. THREADING MACHINE FOR GARPBTLOOMS. 'APPLIOATIONIILED MAR. 17, 1905'.

I Inventor I %o&%

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'PATENTED AUG. 1, 1905.

- Hi HEYMAN. THRBADING MACHINE FOR CARPET LOOMS.

APPLICATION FILED MAR-17, 1905.

5 SHEETSSHEET i.

UT! 2 j/Inventor Witnesses No. 796,209. PATENTED AUG. 1, 1905'. H. HBYM'AN. THREADING MACHINE FOR GARPET'LO0MS.

1 APPLICATION FILED MAR. 17, 1905.

5 SHEETS-SHEET 5.

Attorneys UNITED STATES PATENT OFFICE.-

THHEADlNG-MACHINE FOR CARPET-LOOIVIS.

No. 796.209v

Specification of Letters Patent.

Patented Aug. 1, 1905.

Applicationfiled March 17, 1905. Serial No, 250,608.

To all whom it may concern.-

Be it known that I, HUGO H'EYMAN, a subject of theKing of Swedenand Norway, residing at Gothenberg, Sweden, have invented a certain new and useful Improvement in Threading- Machines for Carpet-Looms, of

-loom a number of beams are used, each carrying alarge number of tuft-yarns. These yarns are threaded through tubes which are carried upon a frame, one of which is connected to each of the beams and is supported upon the loom. The loom has mechanism for drawing oif and cutting suflicientyarn in order to make a row of tufts, the beam then being passed along and another beam having yarns wound in a different combination of colors substituted and the process repeated.

The present invention has for its object the threading of the tuft-yarns through the tubes automatically and with great expedition. I have already applied for a patent (Serial No. 212,101, dated June 11, 1 904) for a machine for attaining this purpose, in which the beam, with the tubes, is supported upon a carriage and moved intermittently above a needle which passes successively through the tubes and its hooked end caused to engage successively with the yarns and draw them through the tubes, the yarns being previously arranged over the tubes. In the present invention I employ a plurality of needles, preferably as many as there are tubes, and operate them simultaneously, whereby all of the tubes are threaded in a single operation.

In order to better understand my invention, attention is directed to the accompanying drawings, showing one embodiment thereof,

' in which-- Figure 1 is a representation in .front elevation of a complete machine, but without the usual number of tubes, the machine illustrated being compressed longitudinally in order to prevent reduction of the scale, a portion of the machine being shown broken away. Fig. 2 is a top view of the same, showing parts broken away. Fig. 3 is a sectional view taken on the lines 3 of Fig. 1. Fig.4 is an enlarged perspective view of that portion of the mechanism which comprises certain of the I needles, tubes, and mechanism for guiding the yarns under the needle-hooks. Fig. 5 is a perspective view of a portion of a roll with the adjusting-comb in place. Fig. 6 is a perspective view of the mechanism looking toward the roll, but with portions omitted in order that the construction may be more readily seen. Figs. 7, 7, 8, and 9 are enlarged top views, on an enlarged scale, of the tubes, needles, and guiding-plate during stages of the movement of the mechanism. Fig. 10 is a side view of the parts in the position shown in Fig. 9. Fig. 11 is a sectional view taken on the lines 11 11 of Fig. 12. Fig. 12 is a sectional View taken on the lines 12 12 of Fig. 11.

In all the views like parts are designated by the same reference characters.

Thefrmna-1n carrying out my invention I provide aframe which comprises side members 1 1, a back member 2, and a top member 3. The side members may be made of metal of web-section and the back member 2 of channel-iron, as shown. is preferably of wood and its top is flat, forming a table. In front of the top member 3 is another wooden piece 4, separated therefrom a sufiicient distance to form a slot 5 for entrance of-the yarn-tubes 6.

The yarn-tube support. The yarn-tubes are carried uponthe usual frame 7, having the end springs 8 for attachment to the loom. When within the machine, the frame 7 rests upon the front portion 4, the tubes depending within the slot 5. The frame is held in position by its cross-beam resting upon the front portion 4, the projecting lugs 9 9 resting in recesses near the ends of the portion 4, thus guidingthe frame in place. The springs 8 will engage overthe angle-plate 8 and prevent vertical movement of the frames at the side thereof. Further support'is secured by the tubes engaging within the sides of the slot 5: In order to hold the tubes with the proper interval separating them for entrance of the needles, plates 10, Fig. 4, are provided, such plates being supported upon a horizontal plate 11, attached to the bottom of the table 3. The forward end of the plate 11 is comb-shaped, being provided with teeth 12, the said teeth extending across the bottom of the slot 5. The lower surface of these teeth are sharpened, as shown, so as to provide a guide for the needles, as will beexplained. The upper edges of the plates 10 are inclined,

The top member 3.

as shown in Fig. 4, the backs being higher than the front. This is for the purpose of more readily permitting the entrance of the tubes within the slot, the tubes being much narrower in the front than in the back. (See Fig. 7.) Owing to the shape of the tubes and the shape of the dividing-plates 10, the narrow part of the tubes will first come in contact with the upper portion of the dividingplates, so that if there is any tendency of the tubes to be out of alinement they will be guided in place and jamming prevented when the frame 7 is introduced in place.

T he yawn-ad usting clem'ee.Above the table 3 is a plate 13, which may be made of wood with a metal edge 14: at its front side. This plate 13 is adapted to be moved upon the table 3 both forward and backward and sidewise by suitable mechanism, as will be described. At its front edge and secured to the metal portion 14 are guiding-plates 15, as many as there are separating-plates 10, so arranged that one will be opposite each tube when the latter is in place. These guidingplates 15 extend upward some distance above the level of the plate 13, and their upper edges are beveled, so as to produce points, as shown. These guiding-plates are for the purpose of keeping the yarns separate when the latter are placed within the machine.

The yarn-separator. The beam 16 after it is wound and while in the winding-machine is provided with an attachment (shown in Fig. for separating the yarns and rendering the beam more readily attached to the rest of the machine. This'device comprises a strip of metal or pasteboard or wood, which may be in the form of a comb 17, having teeth arranged at intervals corresponding to the separation of the tubes and corresponding in numbers to the yarns. This comb is placed, preferably while the beam is in the windingmachine, below the yarns, each yarn resting in an interval between two teeth. When the ends of the yarns are resting between the teeth of the comb, it is attached to the yarns by means of a strip of wood 17, having a groove 18. The teeth of the comb bearing the yarns are inserted within the groove of the strip and the strip is secured to the comb by means of a band 19 at each end of the strip. The band may be of small metal wire. This device I regard as of great importance in connection with the rest of my machine, as it permits the yarns to be kept separate and readilyintroduced between the guiding-plates without danger of there being more than one yarn between each two plates.

T he beam-support. The beam is supported upon a carriage 20, which comprises fixed arms 21 and pivoted arms 22, the latter being held into engagement with the beam by means of the spring 23, so that the beam cannot rotate. This support is carried upon standards 24, pivoted to a shaft 25, and prol vided with suitable mechanism for moving it away from the framework of the machine or toward the front, so that when the machine is in operation a sufficient tension will be imparted to the yarns to prevent them sliding or otherwise getting out of alinen'lent. A finger-piece 67 on each of the arms 22 permits the-carriage to be opened and the beams to be removed or applied.

T he aeedZes.The threadingaieedles 26 are as numerous as the tubes and are inserted between the teeth of the comb-bar 27 below the table 3 and are spaced by the teeth distances equal to the intervals between the plates 10. The bar 27 constitutes a slide for the needles, by means of which they are supported and simultaneously moved vertically through the tubes. Each needle has a hook 28 near the top and the needles are secured against the plate 27 by means of a plate 29, secured thereto by bolts or other suitable means. The ends of the bar 27 are provided with vertical ways 30, which engage with ribs 30, (see Fig. 11,) such ribs being attached to the sides 1 1 of the frame and extending vertically upward to the sides of the slot 5, so that the needles may be elevated to pass through the slot, one needle passing within each of the intervals formed between the plates 10 10.

The actuating me0hmuism-ln order to move the various mechanisms in proper sequence, ashaft 31 is suitablyjournaled in the frame and is provided with a stop mechanism, so that it may be given a complete revolution when desired. This shaft 31v is provided with cranks 32, which through pitmen 33 connect to levers 34:. These levers are pivoted at 35 to brackets 36, secured to the cross-piece 2. The free ends of the levers are connected by the links 37 to the bar 27. By employing two cranks and two sets of levers a parallel motion will be produced and the bar 27 will be elevated and depressed without jamming. Above the shaft 31 is asecond shaft 38, which is connected to and rotated therewith by means of the gear-wheels 39 and 39, connected to the shafts 31 and 38, respectively. The shafts being connected in this manner will rotate in opposite directions, as shown in Fig. 6, the shaft 38 rotating in a clockwise direction and the shaft 31 in an anticlockwise direction.

T he yam/{adjusting wwchhn/zLs/h. .In devices of this character, owing to the close arrangement of the tuft-yarns, the tubes must be of flattened section and are arranged very close together. The needles should be made of t fiat cross-section. as they would not be sufiiciently strong if made round. In order, therefore, to engage the books with the yarns, it is disadvantageous to twist the needles, and consequently it becomes necessary to move the yarn around, back of, and under the book of the needle, so as to engage the yarn therewith. In order to secure this result, the following the rear edge of the slot5.

mechanism is employed. The shaft 38 is provided with two cams 40.40, and an intermediate box-cam 41. The earns 40 engage with rollers 42, which are connected to. brackets 43, depending from the bottom of the plate 13. The intermediate box-cam 41', which contains a groove 44, engages with a roller or pin 45, carried by the bracket 46, also depending from the plate 13. A spring 47 (see Figs. 2 and 3) connects the table 3 and the plate 13 and serves to force the latter toward the front of the machine, the plate being held in alinement by engagement of the pins 42 with the cams 40. Upon the rotation of the shaft 38 the plate 13 will be caused to move toward and away from the tube-frame byv means of i the cams 40 and spring 47 andwill be moved from side to side by means of the cam 41. The cams 4O 40 have three steps or stages, (in dicated at 40, 40 40",) so as'to give the plate 13 three positions. The movement of the plate 13 is so adjusted that when it is in its retracted position the front edges of the plates 15 will be on a line with or slightly backof This is for the purpose of admitting the tubes. When moved at its forwardmost point of movement, the

' forward'edges of the plates 15 will be over about the middle of the tubes. In its intermediate position the plates will be very close to the needles.

The beam-carriage-actuating mechanism.

- Upon1the shaft 31' and in addition to the cranks carried thereon are earns 48 and 49 49, the cams 48 engaging with aroller or pin 50, carried upon a lever 51, pivoted at 52. The otherend of the lever is connected, by means of a link 53, to the lower end'of the lever 24. By this construction as theshaft31 is rotated the levers 24 and the carriage 20 are moved away fromthe front of the frame and with it the beam. This is for the purpose of keeping the yarns under tension, as will be explained.

The yarntension dem'ce.The cams v49 engage with rollers 54, carried by bell-crank levers 55, said levers being pivoted at 56. The levers are outside of the plate 13 and are connected together by meansof a roller or rod 56. This roller is adapted to be moved by engagement with the rollers 54 with the cams 49 from the solid-line position shownin Fig. 3 to the dotted-line position immediately over the forward end of the plate 13 and back of the plates 15. Under this roller, when in the dotted-line position, is. placed. a strip of: plush or other suitable material 57.

This roller is for the purpose of holding the yarns in positionbetween the plates'15 and under tension to permit them to be grasped by the needles.

Operationrlhe operation ofso much of the'mechanism as has been described is as follows: The tube-'frame-is first introduced in place with the tubes'withinthe slot 5,-.each

tube being separated from its neighbor by a plate 10. The beam is then placed within the carriage 20, the yarnsbeing unwound a sufficientdistance to cause them to lie upon the plate 13, as shown in Figs. 3 and 6. The comb 17 serves as a guide to introduce the yarns between the plates 15, the yarns being stretched out upon the plate 13, the clamp 22 preventing the beam 'from rotating. The comb 17 and plate 17 are then disengaged from the yarns. The shaft 31 is then rotated a complete revolution and is brought to rest. During this rotation the yarns are simultaneously threaded through the tubes. The cranks 32, through the agency of the levers and connecting-rods, will-first elevate and then depressthe frame 27. The shaft 38 being rotated will cause the first'step 40 of the cam 40 to engage with its pin, moving the plate 13 to the intermediate position,-Fig. 7 -so that when the needles are elevated above the tubes there will be no chance of the yarns getting on the wrong side of a needle. Be-

fore the needles begin to ascend the rod 56 is quickly moved to the dotted-line position (shown in Fig. 3) to engage with the free ends of the yarns and hold them against the strip 57 until the hooks on the needles have engaged with the yarn. At the same time the carriage 21 will be'slowly moved away from the frame, so that the yarns will be kept' dles are extended a short distance above the yarns. When in this vposition,.the plates 15 carried by the plate 13 will be immediately opposite to the needles and in the intermediate position. The shaft' 38 will be rotated in sequence with the shaft 31 and the pin 45 will at this point engage with the curved portion of the cam 44, moving the plate 13 in the direction of the arrow in Fig. 7 to the position shown in Fig. 8. This will stretch the yarns around the side of the needles and below the hooks, asshown. If the needles are then lowered, the hookswould ordinarily engage with the yarn and draw it through the tube; butto avoid any possibility of a needle failing to engage withthe yarn a third, movement of the guide is provided for. .By this third movementthe plate 13 is moved in the direction of the arrow shown in Fig. 8 by the pins 42 engaging with the third step 40 of the cam 40. This will advance the plate 13 and cause the plates 15 to pass between theneedles, as shown in Fig.9., This will force the yarns around.

under the hooks and at right angles to the position that they formerly occupied. As soon that the yarns will be drawn through the tubes by the descending needles. The third step 40 of the cam will return the plate 13 to the retracted position.

Tabe-fmme-remoping dem'ce.1t is found that the frame when threaded is somewhat difficult to remove from the machine, and for that purpose I provide an automatic mechanism for accomplishing this. As shown in Fig. 3, the lugs 9 9 on the side of the top frame rest upon rods 58, which pass through guides 59 in the frame, so that they may be moved in a vertical direction. Surrounding each of the rods is a slide 60, which is connected, by means of a link 61, to a pivoted lever 62. This lever has a flat-topped projection 63, arranged in the path of a cam 64, carried by the plate 29 of the carriage 27. Above the slide 60 is a pin on the rod 58 and below it a spring 66. When the frame 27 is elevated, the cam projection 64 will engage with the pivoted lever 62, turning it upon its axis and depressing the spring 66. On the descent of the carriage 27 the cam 64 will engage with the flat top of the projection 63, elevating the slide, and through the pin 65 will raise the rods 58. This will lift the side frames 9 and loosen the tubes from within the slot 5.

Stop-mom'on.The stop-motion is illustrated in detail in Figs. 11 and 12. The shaft 31 carries a loose pulley 68, which is connected by a belt to a source of power. (Not shown.) The pulley 68 is secured in place by means of a collar 69. Within the pulley are formed two cam-surfaces 70 71. Connected to the shaft 31 so as to turn therewith is a block 72, having a slideway within which moves a slide 73. This slide has at one end a finger 74, which may engage with the cam 70 or 71. Springs move the slide 73 toward the cams 7O 71. Surrounding the shaft 31 and free to turn thereon is a lever 76, which may carry a pendant 77 for attachment to a pedal, if it is not desired to operate the lever directly by hand. This lever is normally elevated by means of a spring 78, the other end of the spring being attached to the framework. The lever 76 carries a cam 79, having a straight portion 80, an inclined portion 81,

and a hook 82. This cam is adapted to engage with a roller 83, carried by the slide 73. The springs 75 keep the roller in engagement with the cam 79. In operation the pulley 68 is rotated in the direction of the arrow. (Shown in Fig. 12.) To start the stop-motion, the lever 76 is moved in the direction of the arrow against the tension of the spring 78, causing the hook 82 of the cam 79 to pass over the roller 83. The springs 75 then move the slide 73 to the dotted-line position, Fig. 11, causing the finger 74 to engage with one of the cams 71 or 70. This will form a positive connection between the pulley and the shaft 31, and the latter will be rotated. As the block 72 turns and is about'to complete its revolution the roller 83 will engage with the inclined surface 81 of the cam 79, the latter being now in the full-line position, owing to pressure on thelever 76 having been released. The roller engaging with the cam will be forced outward and the slide 73 moved to cause the finger 74 to be disengaged from the cam 70 or 71. This will break the connection between the pulley and the shaft if the latter has made exactly one revolution.

What I claim is 1. In an apparatus for threading yarns in tubes for carpet-looms, the combination with the tubes, of means for supporting the yarns adjacent to the tubes, a plurality of needles, and means for Slll'llllllillIGOUSlY moving the needles through the tubes to hook the yarns, and draw them through the tubes.

2. In an apparatus for threading yarns in tubes for carpet-looms, the combination with the tubes, of means forsupporting the tubes, means for supporting the yarns adjacent to the tubes, a plurality of needles, and means for simultaneously moving the needles to cause them to pass through the tubes to hook the yarns and draw them through the tubes.

3. In an apparatus for threading yarns in tubes for carpet-looms, the combination with the tubes, of means for supporting the tubes, means for supporting the yarns adjacent to the tubes, a plurality of needles, means for simultaneously passing the needles through the tubes, means for moving the yarns against the needles, and means for drawing the needles back through the tubes.

4. In an apparatus for threading yarns in tubes for carpet-looms, a yarn-beam, and means for separating the yarns thereon, in combination with a plurality of tubes, means for sup porting the tubes, means for supporting the yarns adjacent to the tubes, a plurality of needles, and means for passing the needles through the tubes to engage with the yarns.

5. In an apparatus for threading yarns in tubes for carpet-looms, a device for separating the yarns, comprisinga comb having teeth separated a distance equal to the points of separation of the tubes, and means for securing the comb to the yarns.

6. In an apparatus for threading yarns in tubes for carpet-looms, a device for separating the yarns, com prisinga comb having teeth separated a distance equal to the points of separation of the tubes, a grooved strip engaging with the comb for securing it to the yarns and means for securing the strip to the comb.

7. In an apparatus for threading yarns in tubes for carpet-looms, the combination with a plurality of tubes, means for supporting the tubes, means for supporting the beam, means for supporting the yarns adjacent to the tubes, a series of needles, and means for moving simultaneously the needles through the tubes, and means for moving the yarn against the needles, when the latter are passed through the tubes, of a frame, a support for the tubes,

the tubes. 7

8. In an apparatus for threading yarns in tubes for carpet-looms, the combination with g the tubes, of a frame, the-top thereof having a slot for the support of the tubes, and plates for dividing the said slot, the said plates lying between the tubes. 7

9. In an apparatus for threading yarns in tubes for carpet-looms, the combination with the tubes, of a frame, the top thereof having a slot for the support of the tubes, and plates for dividing the said slot, said plates lying between the tubes, the upper edges of the plates being inclined.

10. In an apparatus for threading yarns in tubes for carpet-looms, the combination with the tubes, of a frame, a table thereon, means for supporting the tubes, a plate. upon the table, means for moving the plate upon the table, a seriesof guiding-plates carried by the plate and adjacent to the tubes, the series of needles, and means for causing the needles to pass through the tubes, and means for mov-' ing the plate to cause the yarns to engage with the needles.

11. In an apparatus for threading yarns in tubes for carpet-looms, the combination with the tubes, of a frame, a support thereon for the tubes, a series of needles and means for moving the needles through the tubes, a beam, of a movable support forthe beam, a support for the yarns adjacent to the needles, and means for moving the needles, and for moving the beam-support.

12. In an apparatus for threading yarns in tubes for carpet-looms, the combination with means for supporting the yarns adjacent to the tubes, means for moving the beam, and means engaging with'the yarns to apply tension thereto.

13. In an apparatus for threading yarns in tubes for carpet-looms, the combination with a frame having a slot therein for supporting I the tubes, a series of needles, means for s1- multaneously moving the needles through the tubes, and a device actuated by the needlesupport for freeing the tubes from the slot.

14. The combination with the tubes, of a frame, means for supporting the tubes, a series of needles, a slidefor the needles, a carriage for supporting the beam, a support for the yarn adjacent to the tubes, and means for clamping the yarns to the support, and means for moving the needles to cause them to pass through the tubes, means for moving the beam to keep the yarns under tension, and means the yarns adjacent to the tubes, and means for threading the yarns th rough a plurality of the tubes simultaneously.

This specification signed and witnessed this 14th day of March, '1905.

HUGO HEYMAN.

Witnesses: LEONARD H. DYER, J NO. RoBT. TAYLOR. 

